ObjectiveThe objective of this work was to evaluate, using radiographic images, the
behavior of four materials used to repair root perforations in dogs' teeth.
Material and MethodsSecond and third premolars of 6 dogs were used. The 48 teeth were randomly
divided into 4 groups (n=12) and the perforations were sealed with one of
the following materials: MTA, AH Plus, Vitremer and gutta-percha. Dogs were
submitted to general anesthesia, teeth were radiographed and pulp was
accessed. Perforations were done, at the maximum curve of the pulp floor,
sealed and the accessed coronal cavity was filled with glass ionomer cement
(Vidrion R). After 90 days, the dogs were sacrificed and the last x-ray
image was taken. Images were analyzed for the presence/absence of
periodontal lesions at the perforation region. Data were analyzed
statistically by chi-square test at 5% significance level. ResultsThere were no statistically significant differences (p≥0.05) among AH Plus,
Vitremer and gutta-percha groups. MTA produced the smallest number of
periodontal lesions (p<0.05). ConclusionsIt may be concluded that none of the tested materials was able to preserve
the integrity of the periodontal tissues in the furcation region, and the
use of MTA resulted in the least formation of adjacent periodontal bone
lesions revealed by the radiographic comparisons.
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